Home / 268,928.61-403,298.87-79,338.62

Finding the Fourth Proportional to 268,928.61, 403,298.87 and 79,338.62

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Solution

The fourth proportional to 268,928.61, 403,298.87 and 79,338.62 is: 118,980.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,928.61 : 403,298.87 = 79,338.62 : x
  2. Step 2: Convert to fraction form
    268,928.61/403,298.87 = 79,338.62/x
  3. Step 3: Cross multiply
    268,928.61x = 403,298.87 × 79,338.62
  4. Step 4: Simplify right side
    268,928.61x = 31,997,176,404.91
  5. Step 5: Solve for x
    x = 31,997,176,404.91/268,928.61
  6. Step 6: Final answer
    x = 118,980.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.